AK Asbestos Abatement Contractor
Exam Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. Which federal agency regulates asbestos exposure in the workplace?
A. CDC
B. OSHA
C. DOT
D. DOE
OSHA regulates workplace exposure under 29 CFR 1926.1101.
2. Which asbestos type is most commonly used in building materials?
A. Amosite
B. Crocidolite
C. Chrysotile
D. Tremolite
Chrysotile (white asbestos) appears in over 90% of ACMs.
3. The permissible exposure limit (PEL) for asbestos is:
A. 0.5 f/cc
B. 0.1 f/cc
C. 1.0 f/cc
D. 0.01 f/cc
OSHA sets the PEL at 0.1 fibers per cubic centimeter.
4. The action level for asbestos is:
,A. 0.1 f/cc
B. 0.1 f/cc averaged over 8 hours
C. 0.2 f/cc
D. 0.01 f/cc
Action level is 0.1 f/cc TWA triggering monitoring and medical
surveillance.
5. Which disease is exclusively linked to asbestos exposure?
A. Asthma
B. COPD
C. Lung cancer
D. Mesothelioma
Mesothelioma is caused only by asbestos exposure.
6. Which work class covers removal of TSI (thermal system insulation)?
A. Class IV
B. Class III
C. Class I
D. Class II
Class I includes TSI and surfacing material removal.
7. Class II asbestos work includes removal of:
A. TSI
B. Surfacing ACM
C. Non-TSI ACM such as flooring and roofing
D. Friable ACM only
Class II involves non-TSI, non-surfacing materials.
8. Which sampling method measures airborne asbestos?
A. Core sampling
B. Chain-of-custody
C. PCM bulk
D. PCM air sampling
Phase-contrast microscopy analyzes airborne fiber concentrations.
,9. Negative pressure enclosures require a minimum pressure of:
A. −0.02 inches water
B. −0.02 inches water column
C. −0.1 inches water
D. −0.5 inches water
Standard NPE pressure is −0.02 inches WC.
10. A critical barrier is used to:
A. Reduce noise
B. Seal openings to prevent contamination
C. Support scaffolding
D. Provide lighting
Critical barriers seal off all penetrations in the containment area.
11. Asbestos waste must be packaged:
A. In paper bags
B. Loose in dumpsters
C. Double-bagged in 6-mil poly with labels
D. In cardboard boxes
EPA requires leak-tight 6-mil bags or sealed drums.
12. Clearance air sampling is required after:
A. Every lunch break
B. Class IV tasks
C. Removal inside regulated areas
D. Removal of intact roofing only
Clearance is required after regulated asbestos abatement.
13. Which respirator provides the highest protection?
A. Half-mask APR
B. PAPR
C. Full-face APR
D. Supplied-air respirator (SAR)
SARs offer the highest protection factors.
, 14. Who can supervise Class I asbestos work?
A. Any laborer
B. Electrician
C. Project designer
D. Competent person
Only a trained competent person oversees Class I work.
15. The HEPA filter removes particles down to:
A. 10 microns
B. 5 microns
C. 0.3 microns
D. 1 micron
HEPA filters capture 99.97% at 0.3 microns.
16. Gloves, suits, and respirators are part of:
A. Engineering controls
B. PPE
C. Administrative controls
D. Monitoring
PPE protects workers from direct exposure.
17. A decontamination unit must include:
A. Office
B. Break room
C. Clean room, shower, and equipment room
D. Elevator access
Three-stage decon units are standard for abatement.
18. Containment poly sheeting must be:
A. 2-mil
B. 3-mil
C. 4-mil
D. 6-mil
Minimum thickness is 6-mil poly.
Exam Questions And Correct Answers
(Verified Answers) Plus Rationale2026
Q&A| Instant Download Pdf
1. Which federal agency regulates asbestos exposure in the workplace?
A. CDC
B. OSHA
C. DOT
D. DOE
OSHA regulates workplace exposure under 29 CFR 1926.1101.
2. Which asbestos type is most commonly used in building materials?
A. Amosite
B. Crocidolite
C. Chrysotile
D. Tremolite
Chrysotile (white asbestos) appears in over 90% of ACMs.
3. The permissible exposure limit (PEL) for asbestos is:
A. 0.5 f/cc
B. 0.1 f/cc
C. 1.0 f/cc
D. 0.01 f/cc
OSHA sets the PEL at 0.1 fibers per cubic centimeter.
4. The action level for asbestos is:
,A. 0.1 f/cc
B. 0.1 f/cc averaged over 8 hours
C. 0.2 f/cc
D. 0.01 f/cc
Action level is 0.1 f/cc TWA triggering monitoring and medical
surveillance.
5. Which disease is exclusively linked to asbestos exposure?
A. Asthma
B. COPD
C. Lung cancer
D. Mesothelioma
Mesothelioma is caused only by asbestos exposure.
6. Which work class covers removal of TSI (thermal system insulation)?
A. Class IV
B. Class III
C. Class I
D. Class II
Class I includes TSI and surfacing material removal.
7. Class II asbestos work includes removal of:
A. TSI
B. Surfacing ACM
C. Non-TSI ACM such as flooring and roofing
D. Friable ACM only
Class II involves non-TSI, non-surfacing materials.
8. Which sampling method measures airborne asbestos?
A. Core sampling
B. Chain-of-custody
C. PCM bulk
D. PCM air sampling
Phase-contrast microscopy analyzes airborne fiber concentrations.
,9. Negative pressure enclosures require a minimum pressure of:
A. −0.02 inches water
B. −0.02 inches water column
C. −0.1 inches water
D. −0.5 inches water
Standard NPE pressure is −0.02 inches WC.
10. A critical barrier is used to:
A. Reduce noise
B. Seal openings to prevent contamination
C. Support scaffolding
D. Provide lighting
Critical barriers seal off all penetrations in the containment area.
11. Asbestos waste must be packaged:
A. In paper bags
B. Loose in dumpsters
C. Double-bagged in 6-mil poly with labels
D. In cardboard boxes
EPA requires leak-tight 6-mil bags or sealed drums.
12. Clearance air sampling is required after:
A. Every lunch break
B. Class IV tasks
C. Removal inside regulated areas
D. Removal of intact roofing only
Clearance is required after regulated asbestos abatement.
13. Which respirator provides the highest protection?
A. Half-mask APR
B. PAPR
C. Full-face APR
D. Supplied-air respirator (SAR)
SARs offer the highest protection factors.
, 14. Who can supervise Class I asbestos work?
A. Any laborer
B. Electrician
C. Project designer
D. Competent person
Only a trained competent person oversees Class I work.
15. The HEPA filter removes particles down to:
A. 10 microns
B. 5 microns
C. 0.3 microns
D. 1 micron
HEPA filters capture 99.97% at 0.3 microns.
16. Gloves, suits, and respirators are part of:
A. Engineering controls
B. PPE
C. Administrative controls
D. Monitoring
PPE protects workers from direct exposure.
17. A decontamination unit must include:
A. Office
B. Break room
C. Clean room, shower, and equipment room
D. Elevator access
Three-stage decon units are standard for abatement.
18. Containment poly sheeting must be:
A. 2-mil
B. 3-mil
C. 4-mil
D. 6-mil
Minimum thickness is 6-mil poly.
